U.S. patent application number 15/952250 was filed with the patent office on 2019-07-11 for liquid crystal display apparatus.
This patent application is currently assigned to Au Optronics Corporation. The applicant listed for this patent is Au Optronics Corporation. Invention is credited to Kung-Ching Chu, Sung-Yu Su, Peng-Bo Xi.
Application Number | 20190212622 15/952250 |
Document ID | / |
Family ID | 63264307 |
Filed Date | 2019-07-11 |
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United States Patent
Application |
20190212622 |
Kind Code |
A1 |
Xi; Peng-Bo ; et
al. |
July 11, 2019 |
LIQUID CRYSTAL DISPLAY APPARATUS
Abstract
A liquid crystal display apparatus includes an array substrate,
a liquid crystal layer, and an opposite substrate. The array
substrate includes a first pixel and a second pixel. The first
pixel includes a first active device and a first pixel electrode.
The first pixel electrode is electrically connected to the first
active device via a first through-hole. The first pixel electrode
includes a plurality of first electrode strips extended along a
first direction. The first through-hole is located at a first
corner of the first pixel electrode. The second pixel includes a
second active device and a second pixel electrode. The second pixel
electrode is connected to the second active device via a second
through-hole. The second pixel electrode includes a plurality of
second electrode strips extended along a second direction. The
second through-hole is located at a second corner of the second
pixel electrode. A virtual straight line connecting between the
first corner and the second corner is substantially not parallel to
the first direction.
Inventors: |
Xi; Peng-Bo; (Taipei City,
TW) ; Su; Sung-Yu; (Tainan City, TW) ; Chu;
Kung-Ching; (Hsinchu City, TW) |
|
Applicant: |
Name |
City |
State |
Country |
Type |
Au Optronics Corporation |
Hsinchu |
|
TW |
|
|
Assignee: |
Au Optronics Corporation
Hsinchu
TW
|
Family ID: |
63264307 |
Appl. No.: |
15/952250 |
Filed: |
April 13, 2018 |
Current U.S.
Class: |
1/1 |
Current CPC
Class: |
H01L 29/78696 20130101;
H01L 27/124 20130101; H05K 9/0054 20130101; G02F 1/136286 20130101;
G02F 1/133514 20130101; G02F 1/136227 20130101; G02F 1/13394
20130101; G02F 1/1368 20130101; G02F 1/134309 20130101; G02F
2201/40 20130101; G02F 1/133512 20130101; G02F 1/133707 20130101;
H01L 29/78645 20130101 |
International
Class: |
G02F 1/1362 20060101
G02F001/1362; G02F 1/1368 20060101 G02F001/1368; G02F 1/1343
20060101 G02F001/1343; G02F 1/1335 20060101 G02F001/1335; G02F
1/1339 20060101 G02F001/1339; H01L 29/786 20060101 H01L029/786;
H01L 27/12 20060101 H01L027/12; H05K 9/00 20060101 H05K009/00 |
Foreign Application Data
Date |
Code |
Application Number |
Jan 5, 2018 |
TW |
107100420 |
Claims
1. A liquid crystal display apparatus, comprising: an array
substrate, comprising: a first pixel, comprising: a first active
device; and a first pixel electrode electrically connected to the
first active device via a first through-hole, wherein the first
pixel electrode comprises a plurality of first electrode strips
substantially extended along a first direction, each of the first
electrode strips has a kink, a virtual line connecting the kinks of
the first electrode strips is not straight, and the first
through-hole is located at a first corner of the first pixel
electrode; and a second pixel, comprising: a second active device;
and a second pixel electrode electrically connected to the second
active device via a second through-hole, wherein the second pixel
electrode comprises a plurality of second electrode strips
substantially extended along a second direction, the second
through-hole is located at a second corner of the second pixel
electrode, and a virtual straight line connecting between the first
corner and the second corner is substantially not parallel to the
first direction; a liquid crystal layer; and an opposite substrate,
wherein the liquid crystal layer is located between the array
substrate and the opposite substrate.
2. The liquid crystal display apparatus of claim 1, wherein the
array substrate further comprises a first scan line, a second scan
line, and a data line, the first active device is electrically
connected to the first scan line and the data line, and the second
active device is electrically connected to the second scan line and
the data line.
3. The liquid crystal display apparatus of claim 2, wherein the
array substrate further comprises: a first conductor layer
electrically connected to the first scan line in parallel via two
first holes; and a second conductor layer electrically connected to
the second scan line in parallel via two second holes.
4. The liquid crystal display apparatus of claim 3, wherein a
virtual straight line connecting between centers of the first holes
is substantially not parallel to a virtual straight line connecting
between centers of the second holes.
5. (canceled)
6. The liquid crystal display apparatus of claim 1, wherein: the
array substrate further comprises a first scan line and a data
line, the first active device is electrically connected to the
first scan line and the data line, the opposite substrate comprises
a first light-shielding layer, when observed along a normal
direction, a portion of an edge of the first light-shielding layer
is adjacent to the virtual line, and an extending direction of the
first light-shielding layer is different from an extending
direction of the first scan line.
7. The liquid crystal display apparatus of claim 6, further
comprising: a spacer located between the opposite substrate and the
array substrate, wherein the opposite substrate further comprises a
second light-shielding layer overlapped with the spacer, and a
width of the second light-shielding layer is greater than a width
of the first light-shielding layer.
8. The liquid crystal display apparatus of claim 7, wherein the
second light-shielding layer is connected to the first
light-shielding layer, and the virtual straight line connecting
between the first corner and the second corner is substantially not
parallel to the second direction.
9. The liquid crystal display apparatus of claim 1, wherein the
array substrate further comprises a first scan line and a data
line, wherein the first active device is electrically connected to
the first scan line and the data line, the opposite substrate
comprises a first light-shielding layer, and when observed along a
normal direction, the first light-shielding layer covers the kinks,
and an extending direction of the first light-shielding layer is
different from an extending direction of the first scan line.
10. The liquid crystal display apparatus of claim 9, further
comprising: a spacer located between the opposite substrate and the
array substrate, wherein the opposite substrate further comprises a
second light-shielding layer overlapped with the spacer, and a
width of the second light-shielding layer is greater than a width
of the first light-shielding layer.
11. The liquid crystal display apparatus of claim 10, wherein the
second light-shielding layer is connected to the first
light-shielding layer, and the virtual straight line connecting
between the first corner and the second corner is substantially not
parallel to the second direction.
12. The liquid crystal display apparatus of claim 1, wherein the
first active device comprises: a first gate; a first semiconductor
layer located on the first gate; and a first source and a first
drain electrically connected to the first semiconductor layer; and
the second active device comprises: a second gate; a second
semiconductor layer located on the second gate; and a second source
and a second drain electrically connected to the second
semiconductor layer, and wherein each of the first semiconductor
layer and the second semiconductor layer comprises a first portion,
a second portion, and a third portion connected in order to form a
U-shape or a 7-shape.
13. The liquid crystal display apparatus of claim 12, wherein the
first semiconductor layer is electrically connected to the first
drain via a first contact hole, and the second semiconductor layer
is electrically connected to the second drain via a second contact
hole.
14. The liquid crystal display apparatus of claim 13, wherein the
first pixel electrode further comprises a first connecting portion
electrically connected to the first electrode strips, and the first
connecting portion is overlapped with the first contact hole; and
the second pixel electrode further comprises a second connecting
portion electrically connected to the second electrode strips, and
the second connecting portion is overlapped with the second contact
hole.
15. A liquid crystal display apparatus, comprising: an array
substrate, comprising a first pixel, comprising: a first active
device; and a first pixel electrode electrically connected to the
first active device via a first through-hole, wherein the first
pixel electrode comprises a plurality of first electrode strips
substantially extended along a first direction; a second pixel,
comprising: a second active device; and a second pixel electrode
electrically connected to the second active device via a second
through-hole, wherein the second pixel electrode comprises a
plurality of second electrode strips substantially extended along a
second direction; and a first signal line, a second signal line,
and a transmission line located on the array substrate, wherein the
first active device is electrically connected to the first signal
line and the transmission line, the second active device is
electrically connected to the second signal line and the
transmission line, a horizontal distance between the first
through-hole and the transmission line is L1, a horizontal distance
between the second through-hole and the transmission line is L2,
and 0.02.ltoreq.L2/L1.ltoreq.0.3; a liquid crystal layer; and an
opposite substrate, wherein the liquid crystal layer is located
between the array substrate and the opposite substrate.
16. The liquid crystal display apparatus of claim 15, wherein the
first through-hole is located at a first corner of the first pixel
electrode, the second through-hole is located at a second corner of
the second pixel electrode, and a virtual straight line connecting
between the first corner and the second corner is substantially not
parallel to the first direction.
17. The liquid crystal display apparatus of claim 15, wherein the
first active device comprises: a first gate; a first semiconductor
layer located on the first gate; and a first source and a first
drain electrically connected to the first semiconductor layer; and
the second active device comprises: a second gate; a second
semiconductor layer located on the second gate; and a second source
and a second drain electrically connected to the second
semiconductor layer, and wherein each of the first semiconductor
layer and the second semiconductor layer comprises a first portion,
a second portion, and a third portion connected in order to form a
U-shape or a 7-shape.
18. The liquid crystal display apparatus of claim 17, wherein the
first semiconductor layer is electrically connected to the first
drain via a first contact hole, and the second semiconductor layer
is electrically connected to the second drain via a second contact
hole.
19. The liquid crystal display apparatus of claim 18, wherein the
first contact hole is located between the transmission line and the
first through-hole, and the second through-hole is located between
the transmission line and the second contact hole.
20. A liquid crystal display apparatus, comprising: an array
substrate, comprising: a first pixel, comprising: a first active
device; and a first pixel electrode electrically connected to the
first active device via a first through-hole, wherein the first
pixel electrode comprises a plurality of first electrode strips
substantially extended along a first direction, and the first
through-hole is located at a first corner of the first pixel
electrode; a second pixel, comprising: a second active device; and
a second pixel electrode electrically connected to the second
active device via a second through-hole, wherein the second pixel
electrode comprises a plurality of second electrode strips
substantially extended along a second direction, the second
through-hole is located at a second corner of the second pixel
electrode, and a virtual straight line connecting between the first
corner and the second corner is substantially not parallel to the
first direction; a first scan line electrically connected to the
first active device; a second scan line electrically connected to
the second active device; a first conductor layer electrically
connected to the first scan line in parallel via two first holes;
and a second conductor layer electrically connected to the second
scan line in parallel via two second holes; a liquid crystal layer;
and an opposite substrate, wherein the liquid crystal layer is
located between the array substrate and the opposite substrate.
21. A liquid crystal display apparatus, comprising: an array
substrate, comprising: a first pixel, comprising: a first active
device, comprising: a first gate; a first semiconductor layer
located on the first gate; and a first source and a first drain
electrically connected to the first semiconductor layer; and a
first pixel electrode electrically connected to the first active
device via a first through-hole, wherein the first pixel electrode
comprises a plurality of first electrode strips substantially
extended along a first direction, and the first through-hole is
located at a first corner of the first pixel electrode; and a
second pixel, comprising: a second active device, comprising: a
second gate; a second semiconductor layer located on the second
gate, wherein each of the first semiconductor layer and the second
semiconductor layer comprises a first portion, a second portion,
and a third portion connected in order to form a U-shape or a
7-shape; and a second source and a second drain electrically
connected to the second semiconductor layer; and a second pixel
electrode electrically connected to the second active device via a
second through-hole, wherein the second pixel electrode comprises a
plurality of second electrode strips substantially extended along a
second direction, the second through-hole is located at a second
corner of the second pixel electrode, and a virtual straight line
connecting between the first corner and the second corner is
substantially not parallel to the first direction; a liquid crystal
layer; and an opposite substrate, wherein the liquid crystal layer
is located between the array substrate and the opposite substrate.
Description
CROSS-REFERENCE TO RELATED APPLICATION
[0001] This application claims the priority benefit of Taiwan
application serial no. 107100420, filed on Jan. 5, 2018. The
entirety of the above-mentioned patent application is hereby
incorporated by reference herein and made a part of this
specification.
BACKGROUND OF THE INVENTION
Field of the Invention
[0002] The invention relates to a liquid crystal display apparatus,
and more particularly, to a liquid crystal display apparatus
including a first pixel and a second pixel.
Description of Related Art
[0003] In recent years, with the continued progress in display
techniques, the observer's demand for the display quality (such as
image resolution and color saturation) of a display is also
becoming higher. However, to manufacture a display with high
performance, the transmittance and liquid crystal efficiency of the
pixels in the display need to be increased.
[0004] In a regular display, the pixels in the array substrate only
have one configuration. As a result, pixel electrodes in the array
substrate cannot achieve the optimal configuration in the display
region, such that a lot of invalid space exits in the display
region so that the transmittance of the display cannot be
increased. Therefore, a method solving the above issues is urgently
needed.
SUMMARY OF THE INVENTION
[0005] At least one embodiment of the invention provides a liquid
crystal display apparatus that can alleviate the issue of
insufficient transmittance of the known liquid crystal display
apparatus.
[0006] At least one embodiment of the invention provides a liquid
crystal display apparatus including an array substrate, a liquid
crystal layer, and an opposite substrate. The array substrate
includes a first pixel and a second pixel. The first pixel includes
a first active device and a first pixel electrode. The first pixel
electrode is electrically connected to the first active device via
a first through-hole. The first pixel electrode includes a
plurality of first electrode strips substantially extended along a
first direction. The first through-hole is located at a first
corner of the first pixel electrode. The second pixel includes a
second active device and a second pixel electrode. The second pixel
electrode is connected to the second active device via a second
through-hole. The second pixel electrode includes a plurality of
second electrode strips substantially extended along a second
direction. The second through-hole is located at a second corner of
the second pixel electrode. A virtual straight line connecting
between the first corner and the second corner is substantially not
parallel to the first direction. The liquid crystal layer is
located between the array substrate and the opposite substrate.
[0007] At least one embodiment of the invention provides a liquid
crystal display apparatus including an array substrate, a liquid
crystal layer, and an opposite substrate. The array substrate
includes a first pixel, a second pixel, a first signal line, a
second signal line, and a transmission line. The first pixel
includes a first active device and a first pixel electrode. The
first pixel electrode is electrically connected to the first active
device via a first through-hole. The first pixel electrode includes
a plurality of first electrode strips substantially extended along
a first direction. The second pixel includes a second active device
and a second pixel electrode. The second pixel electrode is
connected to the second active device via a second through-hole.
The second pixel electrode includes a plurality of second electrode
strips substantially extended along a second direction. The first
active device is electrically connected to the first signal line
and the transmission line. The second active device is electrically
connected to the second signal line and the transmission line. The
horizontal distance between the first through-hole and the
transmission line is L1. The horizontal distance between the second
through-hole and the transmission line is L2. L1 is different from
L2, and 0.02.ltoreq.L2/L1.ltoreq.0.3. The liquid crystal layer is
located between the array substrate and the opposite substrate.
[0008] One of the objects of the invention is to increase the
transmittance of the liquid crystal display apparatus.
[0009] One of the objects of the invention is to increase the
liquid crystal efficiency of the liquid crystal display
apparatus.
[0010] One of the objects of the invention is to increase the
aperture ratio of the liquid crystal display apparatus.
[0011] In order to make the aforementioned features and advantages
of the disclosure more comprehensible, embodiments accompanied with
figures are described in detail below.
BRIEF DESCRIPTION OF THE DRAWINGS
[0012] The accompanying drawings are included to provide a further
understanding of the invention, and are incorporated in and
constitute a part of this specification. The drawings illustrate
embodiments of the invention and, together with the description,
serve to explain the principles of the invention.
[0013] FIG. 1 is a top view of a display apparatus according to an
embodiment of the invention.
[0014] FIG. 2A is a partially-enlarged view of region AR in FIG.
1.
[0015] FIG. 2B is a partially-enlarged view of region BR in FIG.
1.
[0016] FIG. 3A is a cross section along section line AA' of FIG.
2A.
[0017] FIG. 3B is a cross section along section line BB' of FIG.
2B.
[0018] FIG. 3C is a cross section along section line CC' of FIG.
2A.
[0019] FIG. 3D is a cross section along section line DD' of FIG.
2B.
[0020] FIG. 4 is a top view of a display apparatus according to an
embodiment of the invention.
DESCRIPTION OF THE EMBODIMENTS
[0021] FIG. 1 is a top view of a display apparatus according to an
embodiment of the invention. FIG. 2A is a partially-enlarged view
of region AR in FIG. 1. FIG. 2B is a partially-enlarged view of
region BR in FIG. 1. FIG. 3A is a cross section along section line
AA' of FIG. 2A. FIG. 3B is a cross section along section line BB'
of FIG. 2B. FIG. 3C is a cross section along section line CC' of
FIG. 2A. FIG. 3D is a cross section along section line DD' of FIG.
2B.
[0022] For ease of explanation, FIG. 1, FIG. 2A, and FIG. 2B omit a
shielding layer SM, a liquid crystal layer 200, an opposite
substrate 300, a spacer PS, a common electrode CM, and first to
fifth insulating layers I1 to I5.
[0023] Referring to FIG. 1, FIG. 3A, and FIG. 3B, a liquid crystal
display apparatus 10 includes an array substrate 100, a liquid
crystal layer 200, and an opposite substrate 300. The liquid
crystal layer 200 is located between the array substrate 100 and
the opposite substrate 300. The liquid crystal layer 200 includes a
liquid crystal medium LC, and the liquid crystal medium LC can be a
liquid crystal molecule, an electrophoretic display medium, or
other suitable media. The display medium in the following
embodiments of the invention is exemplified by a liquid crystal
molecule, but the invention is not limited thereto.
[0024] The array substrate 100 includes a substrate SB1, a first
pixel PX1, a second pixel PX2, a first signal line SL1, a second
signal line SL2, a third signal line SL3, and a transmission line
DL. The first pixel PX1, the second pixel PX2, the first signal
line SL1, the second signal line SL2, the third signal line SL3,
and the transmission line DL are located on the substrate SB1. The
first signal line SL1, the second signal line SL2, and the third
signal line SL3 are interlaced with the transmission line DL.
[0025] The first pixel PX1 includes a first active device TFT1 and
a first pixel electrode E1. The second pixel PX2 includes a second
active device TFT2 and a second pixel electrode E2. The first
active device TFT1 and the second active device TFT2 are
respectively electrically connected to the first signal line SL1
and the second signal line SL2. The first signal line SL1 and the
second signal line SL2 are, for instance, scan lines. The first
active device TFT1 and the second active device TFT2 are
electrically connected to the transmission line DL, and the
transmission line DL is, for instance, a data line. In the present
embodiment, the extending direction of the portion of the
transmission line DL adjacent to a first electrode strip ES1 is
substantially the same as the first direction ET1, and the
extending direction of the portion of the transmission line DL
adjacent to a second electrode strip ES2 is substantially the same
as the second direction ET2, but the invention is not limited
thereto. In the present embodiment, the second direction ET2 is not
parallel or perpendicular to the first direction ET1.
[0026] Referring to FIG. 1, FIG. 2A, and FIG. 3A, the first active
device TFT1 includes a first gate G1, a first semiconductor layer
CH1, a first source S1, and a first drain D1. The first gate G1 is
electrically connected to the first signal line SL1. The first gate
G1 is located on the first semiconductor layer CH1 and is separated
from the first semiconductor layer CH1 by a second insulating layer
I2. The first semiconductor layer CH1 includes, for instance, a
U-shape formed by a first portion CH1A, a second portion CH1B, and
a third portion CH1C connected in order, but the invention is not
limited thereto. In other embodiments, the first semiconductor
layer CH1 includes, for instance, a 7-shape formed by a first
portion CH1A, a second portion CH1B, and a third portion CH1C
connected in order. In the present embodiment, the shielding layer
SM is disposed between the first semiconductor layer CH1 and the
substrate SB1, and the first insulating layer I1 is disposed
between the first semiconductor layer CH1 and the shielding layer
SM, but the invention is not limited thereto. The shielding layer
SM is, for instance, a metal layer that can reduce the interference
to the first semiconductor layer CH1 by an external electromagnetic
wave or reduce the leakage current phenomenon of the first
semiconductor layer CH1.
[0027] The first source S1 and the first drain D1 are electrically
connected to the first semiconductor layer CH1. The first source S1
is electrically connected to the transmission line DL, and the
transmission line DL is, for instance, a data line. The first
semiconductor layer CH1 is electrically connected to the first
source S1 via a first opening TH1. The first semiconductor layer
CH1 is electrically connected to the first drain D1 via a first
contact hole CT1. In the present embodiment, the contact hole (not
labeled) in the second insulating layer I2 and the contact hole
(not labeled) in the third insulating layer I3 are connected to
each other to form the first contact hole CT1, and the opening (not
labeled) in the second insulating layer I2 and the opening (not
labeled) in the third insulating layer I3 are connected to each
other to form the first opening TH1, but the invention is not
limited thereto. In some embodiments, the third insulating layer I3
between the first drain D1 and the first semiconductor layer CH1
may be omitted so that the first contact hole CT1 only includes the
contact hole in the second insulating layer I2, and the first
opening TH1 only includes the opening in the second insulating
layer I2.
[0028] The first pixel electrode E1 includes a first connecting
portion EM1 and a plurality of first electrode strips ES1. The
first electrode strips ES1 are substantially extended along the
first direction ET1. The invention does not limit that the first
electrode strip ES1 needs to be entirely extended along the same
direction, only that the main portion of the first electrode strip
ES1 needs to be substantially extended along the first direction
ET1. For instance, a single first electrode strip ES1 can have a
portion HT1 and a portion LT1, the portion HT1 and the portion LT1
are, for instance, formed by the same film layer, the portion HT1
is the main portion of the first electrode strip ES1 and extended
along the first direction ET1, and the first electrode strip ES1
has a kink located between the portion HT1 and the portion LT1.
Among the kinks in the first pixel electrode E1, a virtual line X1
connecting the kinks is not a straight line. Due to the presence of
the kinks, at least another extending direction different from the
first direction ET1 can exist at the location of the first
electrode strips ES1 adjacent to the first signal line SL1 and the
second signal line SL2, and the design of at least another
extending direction at the location of the first electrode strips
ES1 adjacent to the first signal line SL1 and the second signal
line SL2 can further facilitate the alignment of the liquid
crystal.
[0029] The first pixel electrode E1 includes a portion HT1
corresponding to a high-transmittance region and a portion LT1
corresponding to a low-transmittance region. The portion HT1 and
the portion LT1 are, for instance, defined by the virtual line X1,
and at least a portion of the portion HT1 can be located between
two separate portions LT1.
[0030] The first connecting portion EM1 is electrically connected
to the plurality of first electrode strips ES1, and in the present
embodiment, the first connecting portion EM1 is, for instance,
electrically connected to three of the first electrode strips ES1,
but is not limited thereto. The first connecting portion EM1 and
the plurality of first electrode strips ES1 are, for instance,
formed by the same film layer. The first connecting portion EM1 is,
for instance, overlapped with the first through-hole T1 and the
first contact hole CT1.
[0031] The fourth insulating layer I4 is located between the first
pixel electrode E1 and the first drain D1. The fourth insulating
layer I4 has a first through-hole T1. The first pixel electrode E1
is electrically connected to the first drain D1 of the first active
device TFT1 via the first through-hole T1. For instance, the first
connecting portion EM1 of the first pixel electrode E1 is
electrically connected to the first drain D1 of the first active
device TFT1 via the first through-hole T1. The first through-hole
T1 is located at a first corner CN1 of the first pixel electrode
E1. The horizontal distance between the first through-hole T1 and
the transmission line DL is L1.
[0032] In the present embodiment, a common electrode CM and a fifth
insulating layer I5 are further disposed between the first pixel
electrode E1 and the fourth insulating layer I4, wherein the fifth
insulating layer I5 is located between the first pixel electrode E1
and the common electrode CM. The common electrode CM and the fifth
insulating layer IS respectively have a through-hole corresponding
to the first through-hole T1, and the first pixel electrode E1 is
further filled in the through-holes in the common electrode CM and
the fifth insulating layer I5 to be electrically connected to the
first drain D1, wherein the common electrode CM is not connected to
the first pixel electrode E1 and the first drain D1.
[0033] Referring to FIG. 1, FIG. 2B, and FIG. 3B, the second active
device TFT2 includes a second gate G2, a second semiconductor layer
CH2, a second source S2, and a second drain D2. The second gate G2
is electrically connected to the second signal line SL2. The second
gate G2 is located on the second semiconductor layer CH2 and is
separated from the second semiconductor layer CH2 by a second
insulating layer I2. The second semiconductor layer CH2 includes,
for instance, a U-shape formed by a first portion CH2A, a second
portion CH2B, and a third portion CH2C connected in order, but the
invention is not limited thereto, and in other embodiments, the
second semiconductor layer CH2 includes, for instance, a 7-shape
formed by the first portion CH2A, the second portion CH2B, and the
third portion CH2C connected in order. In the present embodiment,
the shielding layer SM is disposed between the second semiconductor
layer CH2 and the substrate SB1, and the first insulating layer I1
is disposed between the second semiconductor layer CH2 and the
shielding layer SM, but the invention is not limited thereto. The
shielding layer SM is, for instance, a metal layer that can reduce
the interference to the second semiconductor layer CH2 caused by an
external electromagnetic wave or reduce the leakage current
phenomenon of the second semiconductor layer CH2.
[0034] The second source S2 and the second drain D2 are
electrically connected to the second semiconductor layer CH2. The
second semiconductor layer CH2 is electrically connected to the
second drain D2 via a second contact hole CT2. The second
semiconductor layer CH2 is electrically connected to the second
source S2 via a second opening TH2. The second source S2 is
electrically connected to the transmission line DL. In the present
embodiment, the contact hole (not labeled) in the second insulating
layer I2 and the contact hole (not labeled) in the third insulating
layer I3 are connected to each other to form a second contact hole
CT2, and the opening (not labeled) in the second insulating layer
I2 and the opening (not labeled) in the third insulating layer I3
are connected to each other to form a second opening TH2, but the
invention is not limited thereto. In some embodiments, the third
insulating layer I3 between the second drain D2 and the second
semiconductor layer CH2 may be omitted. The second contact hole CT2
only includes the contact hole in the second insulating layer I2,
and the second opening TH2 only includes the opening in the second
insulating layer I2.
[0035] In the present embodiment, although the shapes of the first
semiconductor layer CH1 and the second semiconductor layer CH2 are
both U-shapes, the shape of the first semiconductor layer CH1 at
the first contact hole CT1 and the first opening TH1 is slightly
different from the shape of the second semiconductor layer CH2 at
the second contact hole CT2 and the second opening TH2.
[0036] The second pixel electrode E2 includes a second connecting
portion EM2 and a plurality of second electrode strips ES2. The
second electrode strips ES2 are substantially extended along the
second direction ET2. The invention does not limit that the second
electrode strip ES2 needs to be entirely extended along the same
direction, only that the main portion of the second electrode strip
ES2 needs to be substantially extended along the second direction
ET2. For instance, a single second electrode strip ES2 can have a
portion HT2 and a portion LT2, the portion HT2 and the portion LT2
are, for instance, formed by the same film layer, the portion HT2
is the main portion of the second electrode strip ES2 and extended
along the second direction ET2, and the second electrode strip ES2
has a kink located between the portion HT2 and the portion LT2.
Among the kinks in the second pixel electrode E2, a virtual line X2
connecting kinks is not a straight line. Due to the presence of the
kinks, at least another extending direction different from the
second direction ET2 can exist at the location of the second
electrode strips ES2 adjacent to the second signal line SL2 and the
third signal line SL3, and the design of at least another extending
direction at the location of the second electrode strips ES2
adjacent to the second signal line SL2 and the third signal line
SL3 can further facilitate the alignment of the liquid crystal.
[0037] The second pixel electrode E2 includes a portion HT2
corresponding to a high-transmittance region and a portion LT2
corresponding to a low-transmittance region. The portion HT2 and
the portion LT2 are, for instance, defined by the virtual line X2,
and at least a portion of the portion HT2 can be located and
connected between two separate portions LT2.
[0038] The second connecting portion EM2 is electrically connected
to the plurality of second electrode strips ES2, and in the present
embodiment, the second connecting portion EM2 is, for instance,
electrically connected to three of the second electrode strips ES2,
but is not limited thereto. The second connecting portion EM2 and
the plurality of second electrode strips ES2 are, for instance,
formed by the same film layer. The second connecting portion EM2
is, for instance, overlapped with the second through-hole T2 and
the second contact hole CT2.
[0039] The fourth insulating layer I4 is located between the second
pixel electrode E2 and the second drain D2. The fourth insulating
layer I4 has a second through-hole T2. The second pixel electrode
E2 is electrically connected to the second drain D2 of the second
active device TFT2 via the second through-hole T2. For instance,
the second connecting portion EM2 of the second pixel electrode E2
is electrically connected to the second drain D2 of the second
active device TFT2 via the second through-hole T2. The second
through-hole T2 is located at a second corner CN2 of the second
pixel electrode E2. The horizontal distance between the second
through-hole T2 and the transmission line DL is L2. The distance L1
is not equal to the distance L2, and
0.02.ltoreq.L2/L1.ltoreq.0.3.
[0040] In the present embodiment, a common electrode CM and a fifth
insulating layer I5 are further disposed between the second pixel
electrode E2 and the fourth insulating layer I4, wherein the fifth
insulating layer I5 is located between the second pixel electrode
E2 and the common electrode CM. The common electrode CM and the
fifth insulating layer IS respectively have a through-hole
corresponding to the second through-hole T2, and the second pixel
electrode E2 is further filled in the through-holes of the common
electrode CM and the fifth insulating layer I5 to be electrically
connected to the second drain D2, wherein the common electrode CM
is not connected to the second pixel electrode E2 and the second
drain D2.
[0041] In the present embodiment, the virtual straight line L
connecting between the first corner CN1 of the first pixel
electrode E1 and the second corner CN2 of the second pixel
electrode E2 is overlapped with the plurality of first electrode
strips ES1 of the first pixel electrode E1, the virtual straight
line L is substantially not parallel to the first direction ET1. In
some embodiments, the virtual straight line L connecting between
the first corner CN1 of the first pixel electrode E1 and the second
corner CN2 of the second pixel electrode E2 is substantially not
parallel to the second direction ET2. In some embodiments, the
virtual straight line connecting between the center of the first
through-hole T1 and the center of the second through-hole T2 is
substantially parallel to the virtual straight line L. In some
embodiments, the virtual straight line connecting between the
center of the first through-hole T1 and the center of the second
through-hole T2 is substantially parallel to and overlapped with
the virtual straight line L.
[0042] When observed from the normal direction of the substrate
SB1, the first contact hole CT1 of the first pixel PX1 is located
between the corresponding first through-hole T1 and the first
opening TH1, and the second through-hole T2 of the second pixel PX2
is located between the corresponding second contact hole CT2 and
second opening TH2. The relative positions of the first contact
hole CT1, the first through-hole T1, and the first opening TH1 are
different from the relative positions of the second contact hole
CT2, the second through-hole T2, and the second opening TH2.
Therefore, the first pixel electrode E1 and the second pixel
electrode E2 can be more closely arranged. In other words, the
space between the first pixel electrode E1 and the second pixel
electrode E2 is reduced. In the present embodiment, a portion of
the first pixel electrode E1 is overlapped with the second scan
line SL2, and a portion of the second pixel electrode E2 is
overlapped with the third scan line SL3, but the invention is not
limited thereto.
[0043] In the present embodiment, the first pixel PX1 and the
second pixel PX2 have different configurations, and therefore the
layout area of the portion HT1 (portion between kinks) of the first
pixel electrode E1 corresponding to a high-transmittance region and
the portion HT2 (portion between kinks) of the second pixel
electrode E2 corresponding to a high-transmittance region can be
increased to increase the transmittance and/or liquid crystal
efficiency of the entire liquid crystal display apparatus 10.
[0044] Referring to FIG. 1, FIG. 2A, and FIG. 3C, the first pixel
PX1 optionally further includes a first conductor layer N1. The
first conductor layer N1 is, for instance, formed in the same
patterning process as the transmission line DL, and the material of
the first conductor layer N1 is a metal, but the invention is not
limited thereto. The first conductor layer N1 is connected to the
first scan line SL1 in parallel via two first holes H1 to alleviate
the issue of signal attenuation due to a large impedance of a
signal line.
[0045] Referring to FIG. 1, FIG. 2B, and FIG. 3C, the second pixel
PX2 optionally further includes a second conductor layer N2. The
second conductor layer N2 is, for instance, formed in the same
patterning process as the transmission line DL, and the material of
the second conductor layer N2 is a metal, but the invention is not
limited thereto. The second conductor layer N2 is connected to the
second scan line SL2 in parallel via two second holes H2 to
alleviate the issue of signal attenuation due to a large impedance
of a signal line.
[0046] In the present embodiment, the virtual straight line
connecting between centers of the first holes H1 is substantially
not parallel to the virtual straight line connecting between
centers of the second holes H2. The first conductor layer N1 of the
first pixel PX1 and the second conductor layer N2 of the second
pixel PX2 have different shapes (such as symmetrical shapes) to
more effectively utilize wiring space.
[0047] In the present embodiment, the liquid crystal display
apparatus 10 can further include a third conductor layer N3. As
shown in FIG. 1, the third conductor layer N3 is connected to the
third scan line SL3 in parallel via two third holes H3 to alleviate
the issue of signal attenuation due to a large impedance of a
signal line. The third conductor layer N3 has, for instance, a
similar shape to the first conductor layer N1.
[0048] FIG. 4 is a top view of a display apparatus according to an
embodiment of the invention.
[0049] Please refer to all of FIG. 1, FIG. 3A to FIG. 3D, and FIG.
4. FIG. 4 only shows the light-shielding layer BM, the first pixel
electrode E1, the second pixel electrode E2, the third pixel
electrode E3, and the spacer PS and omits other components.
[0050] The opposite substrate 300 includes a substrate SB2 and a
light-shielding layer BM. The light-shielding layer BM is disposed
on the substrate SB2, and when observed along the normal direction
of the substrate SB2, referring to both FIG. 1 and FIG. 4, the
light-shielding layer BM covers the first opening TH1, the second
opening TH2, the first contact hole CT1, the second contact hole
CT2, the first hole H1, the second hole H2, and the third hole H3.
In a preferred embodiment, the light-shielding layer BM completely
covers the first opening TH1, the second opening TH2, the first
contact hole CT1, the second contact hole CT2, the first hole H1,
the second hole H2, and the third hole H3. The light-shielding
layer BM includes a first light-shielding layer BM1, a second
light-shielding layer BM2, and a third light-shielding layer
BM3.
[0051] When observed along the normal direction (such as a
direction perpendicular to the substrate SB1 or the substrate SB2),
a portion of an edge of the first light-shielding layer BM1 is
adjacent to the virtual line (such as the virtual line X1 or the
virtual line X2) connecting the kinks of the pixel electrode. In
some embodiments, when observed along the normal direction (such as
a direction perpendicular to the substrate SB1 or the substrate
SB2), a portion of an edge of the first light-shielding layer BM1
is overlapped with the virtual line (such as the virtual line X1
and the virtual line X2) connecting the kinks of the pixel
electrode. The overlap comprises, for instance, a plurality of
intersections or a plurality of line segments, and in the present
embodiment, the overlap comprises a plurality of intersections, but
is not limited thereto. The first light-shielding layer BM1 covers
the first signal line SL1, the second signal line SL2, and the
third signal line SL3. In some embodiments, the width of the first
light-shielding layer BM1 remains consistent, but the invention is
not limited thereto. In the present embodiment, the extending
direction of the first light-shielding layer BM1 is different from
the extending direction of the first signal line SL1 (first scan
line), the extending direction of the second signal ling SL2
(second scan line), and the extending direction of the third signal
line SL3 (third scan line). Therefore, the width of the first
light-shielding layer BM1 does not need to be large to cover the
low-transmittance regions of the first pixel electrode E1, the
second pixel electrode E2, and the third pixel electrode E3. In the
present embodiment, the extending direction of the first
light-shielding layer BM1 located on the first signal line SL1 is
different from the extending direction of the first light-shielding
layer BM1 on the second signal line SL2.
[0052] The second light-shielding layer BM2 is connected to the
first light-shielding layer BM1. The width of the second
light-shielding layer BM2 is, for instance, greater than the width
of the first light-shielding layer BM1, and the contour of the
second light-shielding layer BM2 is, for instance, circular. The
spacer PS is located between the opposite substrate 300 and the
array substrate 100. The second light-shielding layer BM2
corresponds to and is overlapped with the spacer PS, and the
contour of the second light-shielding layer BM2 is, for instance,
the same as the contour of the spacer PS, but the invention is not
limited thereto. The spacer PS is, for instance, configured to
control the distance between the opposite substrate 300 and the
array substrate 100, i.e., configured to control the thickness of
the liquid crystal layer 200 (or liquid crystal layer gap). The
contour of the spacer PS is, for instance, circular, rectangular,
trapezoidal, or other suitable shapes.
[0053] The first light-shielding layer BM1 and the second
light-shielding layer BM2, for instance, cover portions (such as
the portions LT1, LT2, and LT3) of the first pixel electrode E1,
the second pixel electrode E2, and the third pixel electrode E3
corresponding to low-transmittance regions. In some embodiments,
the first light-shielding layer BM1 and the second light-shielding
layer BM2 completely cover portions (such as the portions LT1, LT2,
and LT3) of the first pixel electrode E1, the second pixel
electrode E2, and the third pixel electrode E3 corresponding to
low-transmittance regions. The first light-shielding layer BM1
and/or the second light-shielding layer BM2 may be overlapped with
at least a portion of the virtual line X1 and/or at least a portion
of the virtual line X2.
[0054] The third light-shielding layer BM3 is connected to the
second light-shielding layer BM2 and/or the first light-shielding
layer BM1. The third light-shielding layer BM3 corresponds to and
covers the transmission line DL.
[0055] In some embodiments, the opposite substrate 300 further
includes a filter device (not shown), and the filter device, for
instance, corresponds to the colors filter films disposed in
correspondence to the locations of the first pixel electrode E1,
the second pixel electrode E2, and the third pixel electrode E3. In
some embodiments, the filter device can also be disposed in the
array substrate 100 to form a color filter-on-array (COA)
structure.
[0056] At least one embodiment of the invention can reduce the
width of the light-shielding layer to increase the aperture ratio
of the liquid crystal display apparatus.
[0057] At least one embodiment of the invention can increase the
arrangement density of the pixel electrode to increase the
transmittance and liquid crystal efficiency of the liquid crystal
display apparatus.
[0058] At least one embodiment of the invention can alleviate the
issue of signal attenuation caused by large impedance of a signal
line.
[0059] Although the invention has been described with reference to
the above embodiments, it will be apparent to one of ordinary skill
in the art that modifications to the described embodiments may be
made without departing from the spirit of the invention.
Accordingly, the scope of the invention is defined by the attached
claims not by the above detailed descriptions.
* * * * *